1. Consider the roller coaster in the example. When does it have the highest kin
ID: 1310050 • Letter: 1
Question
1. Consider the roller coaster in the example. When does it have the highest kinetic energy?
At the top of the track
At the end of the track
At the top of the first loop
At the top of the second loop
At the top of the first hill
2. Which of the following are true of the effect of friction on the Hot Wheels car at the horizontal bottom part of the ramp.
Friction makes the potential energy increase
Friction makes the kinetic energy increase
Friction makes the kinetic energy decrease
Friction makes the TOTAL energy decrease
Friction leaves the TOTAL energy constant
3. Consider the roller coaster in the example. When does it have the highest TOTAL energy?
At the top of the track
At the end of the track
At the top of the first loop
At the top of the second loop
Always has the same TOTAL energy
At the top of the track
At the end of the track
At the top of the first loop
At the top of the second loop
At the top of the first hill
2. Which of the following are true of the effect of friction on the Hot Wheels car at the horizontal bottom part of the ramp.
Friction makes the potential energy increase
Friction makes the kinetic energy increase
Friction makes the kinetic energy decrease
Friction makes the TOTAL energy decrease
Friction leaves the TOTAL energy constant
3. Consider the roller coaster in the example. When does it have the highest TOTAL energy?
At the top of the track
At the end of the track
At the top of the first loop
At the top of the second loop
Always has the same TOTAL energy
Explanation / Answer
Q1 .At the top of the first hill
Q2 Friction makes the kinetic energy decrease
According to the third law of thermodynamics the the total energy of the system must remain the same but answer 3 is correct.
Q3 Always has the same TOTAL energy
At each point in time, it will either being using kinetic energy (while in motion), or potential energy (while at a standstill). The total energy will always be 100% of those two combined.
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